What does the Bible say about spiritual battles?

The Bible is clear that believers engage in spiritual warfare, as highlighted in Ephesians 6:12, where Paul states we wrestle not against flesh and blood, but against principalities and powers. This points to the realization that our battles are often against spiritual wickedness in high places, reflecting a constant conflict with evil forces seeking to undermine our faith. Therefore, we must recognize that preparation is essential, much like equipping oneself for any battle, as emphasized in Ephesians 6 where Paul instructs believers to put on the whole armor of God to withstand such adversities.